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Due to the limited availability of quantum computing power in the near future, cryptographic security techniques must be developed for secure remote use of current and future quantum computing hardware. Prominent among these is Universal…

Quantum Physics · Physics 2022-12-29 Ieva Čepaitė

Quantum processing unit (QPU) has to satisfy highly demanding quantity and quality requirements on its qubits to produce accurate results for problems at useful scales. Furthermore, classical simulations of quantum circuits generally do not…

Emerging Technologies · Computer Science 2022-07-05 Wei Tang , Margaret Martonosi

Quantum computational chemistry (QCC) is the use of quantum computers to solve problems in computational quantum chemistry. We develop a high performance variational quantum eigensolver (VQE) simulator for simulating quantum computational…

Here we present qFlex, a flexible tensor network based quantum circuit simulator. qFlex can compute both exact amplitudes, essential for the verification of the quantum hardware, as well as low fidelity amplitudes, in order to mimic…

Limited quantum memory is one of the most important constraints for near-term quantum devices. Understanding whether a small quantum computer can simulate a larger quantum system, or execute an algorithm requiring more qubits than…

Quantum Physics · Physics 2020-12-10 Tianyi Peng , Aram Harrow , Maris Ozols , Xiaodi Wu

The effects of noise are one of the most important factors to consider when it comes to quantum computing in the noisy intermediate-scale quantum computing (NISQ) era that we are currently in. Therefore, it is important not only to gain…

Quantum Physics · Physics 2025-08-07 T. Piskor , M. Schöndorf , M. Bauer , D. Smith , T. Ayral , S. Pogorzalek , A. Auer , M. Papič

This paper compares quantum computing simulators running on a single CPU or GPU-based HPC node using the Quantum Volume benchmark commonly proposed for comparing NISQ systems. As simulators do not suffer from noise, the metric used in the…

A Quantum Computer is a new type of computer which can efficiently solve complex problems such as prime factorization. A quantum computer threatens the security of public key encryption systems because these systems rely on the fact that…

Quantum Physics · Physics 2007-05-23 Kevin M. Obenland , Alvin M. Despain

Quantum computers are promising powerful computers for solving complex problems, but access to real quantum hardware remains limited due to high costs. Although the software simulators on CPUs/GPUs such as Qiskit, ProjectQ, and Qsun offer…

Quantum Physics · Physics 2025-03-19 Tuan Hai Vu , Vu Trung Duong Le , Hoai Luan Pham , Quoc Chuong Nguyen , Yasuhiko Nakashima

We perform an end-to-end benchmark of a hybrid sequential quantum computing (HSQC) solver for higher-order unconstrained binary optimization (HUBO), executed on IBM Heron r3 quantum processors to evaluate the potential of current quantum…

Quantum computing has tremendous potential to overcome some of the fundamental limitations present in classical information processing. Yet, today's technological limitations in the quality and scaling prevent exploiting its full potential.…

Quantum Physics · Physics 2024-08-23 Leonid Abdurakhimov , Janos Adam , Hasnain Ahmad , Olli Ahonen , Manuel Algaba , Guillermo Alonso , Ville Bergholm , Rohit Beriwal , Matthias Beuerle , Clinton Bockstiegel , Alessio Calzona , Chun Fai Chan , Daniele Cucurachi , Saga Dahl , Rakhim Davletkaliyev , Olexiy Fedorets , Alejandro Gomez Frieiro , Zheming Gao , Johan Guldmyr , Andrew Guthrie , Juha Hassel , Hermanni Heimonen , Johannes Heinsoo , Tuukka Hiltunen , Keiran Holland , Juho Hotari , Hao Hsu , Antti Huhtala , Eric Hyyppä , Aleksi Hämäläinen , Joni Ikonen , Sinan Inel , David Janzso , Teemu Jaakkola , Mate Jenei , Shan Jolin , Kristinn Juliusson , Jaakko Jussila , Shabeeb Khalid , Seung-Goo Kim , Miikka Koistinen , Roope Kokkoniemi , Anton Komlev , Caspar Ockeloen-Korppi , Otto Koskinen , Janne Kotilahti , Toivo Kuisma , Vladimir Kukushkin , Kari Kumpulainen , Ilari Kuronen , Joonas Kylmälä , Niclas Lamponen , Julia Lamprich , Alessandro Landra , Martin Leib , Tianyi Li , Per Liebermann , Aleksi Lintunen , Wei Liu , Jürgen Luus , Fabian Marxer , Arianne Meijer-van de Griend , Kunal Mitra , Jalil Khatibi Moqadam , Jakub Mrożek , Henrikki Mäkynen , Janne Mäntylä , Tiina Naaranoja , Francesco Nappi , Janne Niemi , Lucas Ortega , Mario Palma , Miha Papič , Matti Partanen , Jari Penttilä , Alexander Plyushch , Wei Qiu , Aniket Rath , Kari Repo , Tomi Riipinen , Jussi Ritvas , Pedro Figueroa Romero , Jarkko Ruoho , Jukka Räbinä , Sampo Saarinen , Indrajeet Sagar , Hayk Sargsyan , Matthew Sarsby , Niko Savola , Mykhailo Savytskyi , Ville Selinmaa , Pavel Smirnov , Marco Marín Suárez , Linus Sundström , Sandra Słupińska , Eelis Takala , Ivan Takmakov , Brian Tarasinski , Manish Thapa , Jukka Tiainen , Francesca Tosto , Jani Tuorila , Carlos Valenzuela , David Vasey , Edwin Vehmaanperä , Antti Vepsäläinen , Aapo Vienamo , Panu Vesanen , Alpo Välimaa , Jaap Wesdorp , Nicola Wurz , Elisabeth Wybo , Lily Yang , Ali Yurtalan

Scaling up to a large number of qubits with high-precision control is essential in the demonstrations of quantum computational advantage to exponentially outpace the classical hardware and algorithmic improvements. Here, we develop a…

We study large-scale applications using a GPU-accelerated version of the massively parallel J\"ulich universal quantum computer simulator (JUQCS--G). First, we benchmark JUWELS Booster, a GPU cluster with 3744 NVIDIA A100 Tensor Core GPUs.…

Quantum Physics · Physics 2022-05-17 Dennis Willsch , Madita Willsch , Fengping Jin , Kristel Michielsen , Hans De Raedt

Quantum Hamiltonian simulation is one of the most promising applications of quantum computing and forms the basis for many quantum algorithms. Benchmarking them is an important gauge of progress in quantum computing technology. We present a…

The assumption of maximum parallelism support for the successful realization of scalable quantum computers has led to homogeneous, ``sea-of-qubits'' architectures. The resulting architectures overcome the primary challenges of reliability…

Quantum computing is moving beyond its early stage and seeking for commercial applications in chemical and biomedical sciences. In the current noisy intermediate-scale quantum computing era, quantum resource is too scarce to support these…

Quantum Physics · Physics 2023-03-08 Honghui Shang , Yi Fan , Li Shen , Chu Guo , Jie Liu , Xiaohui Duan , Fang Li , Zhenyu Li

Quantum computing has the potential to solve many computational problems exponentially faster than classical computers. The high shares of renewables and the wide deployment of converter-interfaced resources require new tools that shall…

Application-based benchmarks are increasingly used to quantify and compare quantum computers' performance. However, because contemporary quantum computers cannot run utility-scale computations, these benchmarks currently test this…

With current technologies, it seems to be very difficult to implement quantum computers with many qubits. It is therefore of importance to simulate quantum algorithms and circuits on the existing computers. However, for a large-size…

Quantum Physics · Physics 2016-09-08 Jumpei Niwa , Keiji Matsumoto , Hiroshi Imai